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PROBLEM
Compressor Overheating (Cont)
Excessive Belt Wear
Reduced Air Delivery
Water in Crankcase; oil appears
milky in color.
TROUBLESHOOTING CHART (Continued)
Restricted air intake.
Improper level and/or grade of oil
used.
Damaged valves (intake and/or
exhaust).
Loose belt.
Pulley misalignment.
Loose pulley.
Compressor valves leaking,
sticking or carboned up.
Worn rings.
Head gasket leaking.
Restricted air intake.
Loose drive belt.
Unit not reaching proper operat-
ing temperature because the
compressor runs in frequently
and is oversized for the air
requirement.
Humid operating conditions.
CAUSE
PAGE 19
CORRECTION
Remove and clean or replace air
filter.
Check for proper oil levels and
recommended oil usage. (See
page 10)
Repair or replace as necessary.
Tighten belt tension to deflect
1/4” with 8 lbs. applied to mid
span of belt.
Align pulley to within 1/16 inch of
the flywheel.
Check for worn key or pulley
bore. Also check for bent engine
shaft. Replace or repair as
necessary.
Tighten pulley set screw or bolt.
Replace.
Replace.
Tighten or replace gasket.
Clean or replace.
Tighten belt tension to deflect
1/4” with 8 lbs. applied to mid
span of belt.
Consult with factory or dealer.
Relocate compressor outfit.
Change oil frequently. Avoid
cylinder rusting and ring wear.
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